WATCH: Osaka talks Beyoncé, Serena and more with Teen Vogue

At 22 years old, Naomi Osaka has already done it all—or at least a lot: won the US and Australian Opens, reached the No. 1 ranking, become a global celebrity and much more.

In a video for Teen Vogue, Osaka was asked questions about some of her other "firsts," such as ...

The first people she followed on Instagram:

Beyoncé, Rihanna and Nicki Minaj

"Shh, don't tell anyone, but I have burner accounts, and I follow them on my burner accounts too," Osaka said.

Her first word:

"Probably Mama or Dada," she said. "I don't know—I don't wanna get in trouble with any of my parents."

Her first time being starstruck:

It was meeting Serena Williams when she was 16.

"I said how much I loved her in an interview, and then the tournament set up basically a fan meeting for me," Osaka said.

The first movie she saw in theaters:

"Probably Harry Potter," Osaka said, "like the first one."

And the first thing she'd do with $1 billion:

"Probably help my dad build his school in Haiti," she said. "Also, a billion dollars is a lot of money. I would have to come back to you with a PowerPoint presentation."

For another new video, set appropriately to a Beyoncé song, Osaka thanked Dr. Shamsah Amersi and other heroes of the fight against COVID-19, as part of The Real Heroes Project.

"Thank you for all you’ve done to help keep us safe, you are truly #TheRealHeroes," she wrote on Twitter.